Almost everything you list cannot be felt in a sim. Most of it comes through the airframe, seat, noises and g forces so there is no point trying to replicate everything you list. People get so hung up on trying to overcomplicate things when in actual fact most of what you say isnt felt through the stick anyway. A lot of those aren't even simulated in home sims anyway. The point of home force feedback is just to add a little bit of realism. If done properly you can have non linear forces. I do with my prepar3d set up. It makes gliding, ga and war birds so much more fun.
To say home force feedback will dilute your pilot skills is a nonsense though. There are so many other factors as to why home sims are different from real flying that ffb is the least of your worries. I have been using ffb for years and had no issue with my years of sim time negatively affecting my ability to use a stick after a nearly 20 year break from gliding. 5 minutes in and it felt right.
Stick position, pressure applied and forces applied should not be learned in a sim, they should be reactions to what the aircraft is doing at any given time. Home Simming is not training, it is fun and nothing more. It is so far removed in so many ways from what a real powered aircraft or glider feels like that it does not dilute a pilots skill and I think you are doing yourself a disservice if you think your home simulator can ruin you as a pilot.
I agree that it shouldn't be high on the list. There are plenty more pressing things missing from fs2 than force feedback and some are biggies! I agree that it is a niche but it can be done to a reasonable level and has been done in other sims. If other devs are including it then there is obviously demand other than just a few of us here.
This was never supposed to be an oh my god this is the most important feature that is missing thread! Merely a reminder that good ffb does exist out there and it doesn't need to be as complicated as some people make it out to be, mainly because the sims themselves don't actually model all those things anyway!
Happy flying!
Chris